Description: These screws are made of alloy steel; of high quality, which offers good resistance to damage. corrosion in many environments. The domed head design is ideal for use in confined spaces as a fastening component, industrial and construction fasteners. There is a lot of length in this set that can be commonly used. in home and office appliances, machinery, furniture, repairs and inventions. Features: Material: 304 stainless steel Type: hex head Size and quantity: Screws M3 x 5mm 20pcs M3 x 6mm 20pcs M3 x 8mm 20pcs M3 x 10mm 20pcs M3 x 12mm 20pcs M3 x 14mm 20pcs M3 x 16mm 20pcs M3 x 18mm 20pcs M3 x 20mm 20pcs M3 nut 160pcs Package include: 180pcs x Screw 160pcs x Nut